BEPCⅡ零模束流反馈系统研制
Research of BEPCⅡ 0-mode beam feedback system
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摘要: 为了抑制BEPCⅡ多束团(93团)、大流强（910 mA）时的纵向振荡（零模），引入了BEPCⅡ零模束流反馈系统。该系统首次应用于BEPCⅡ储存环上，它包括了束流信号采集、滤波、下变频、鉴相、移相等几个部分。使用该系统后，束流的纵向边带被抑制度大于10 dB，这表明，系统能够抑制束流的纵向振荡。Abstract: The BEPCⅡ is a double-ring collider with high current(0.91 A) and lots of,which had bunches(93 bunches). In order to inhibit the longitudinal oscillation (0-mode), a 0-mode beam feedback system was used never been used at the storage ring of the BEPCⅡ. It is made up of beam signal collection, filter, down conversion, phase detectior, phase shifter, etc. When the system runs, the longitudinal sideband will be suppressed by more than 10 dB. It shows that the system can inhibits the longitudinal oscillation effectively.
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